In the past it was treated as including about 275 genera and over 5,000 species, but its circumscription has been radically altered since numerous molecular phylogenies have shown the traditional broad circumscription to be grossly polyphyletic. Many genera have recently been transferred to other families within the Lamiales, notably Plantaginaceae and Orobanchaceae but also several new families . Several families of the Lamiales have had their circumscriptions enlarged to accommodate genera transferred from Scrophulariacae sensu lato.